refactor(mp-harmony): add HAR dependency checks and debug logs

1. add debug logs for diy component lifecycle and data flow
2. add required HAR dependency declarations for mp-harmony entry module
3. add har-deps config, validation script and documentation

stub-app-projects/mp-harmony/entry/scripts/load-json5.js

@@ -0,0 +1,144 @@
+/**
+ * 简单 json5 解析 (支持 // 单行注释, /* 多行注释 *\/, 字符串, 转义)
+ * 不支持: 数字下划线, 十六进制等扩展
+ */
+'use strict';
+
+function parseJson5(text) {
+  let i = 0;
+  const len = text.length;
+
+  function peek() { return text[i]; }
+  function next() { return text[i++]; }
+
+  function skipWsAndComments() {
+    while (i < len) {
+      const c = text[i];
+      if (c === ' ' || c === '\t' || c === '\n' || c === '\r') {
+        i++;
+        continue;
+      }
+      if (c === '/' && text[i + 1] === '/') {
+        while (i < len && text[i] !== '\n') i++;
+        continue;
+      }
+      if (c === '/' && text[i + 1] === '*') {
+        i += 2;
+        while (i < len && !(text[i] === '*' && text[i + 1] === '/')) i++;
+        i += 2;
+        continue;
+      }
+      break;
+    }
+  }
+
+  function readString() {
+    const quote = next(); // " or '
+    let out = '';
+    while (i < len) {
+      const c = next();
+      if (c === '\\') {
+        const esc = next();
+        switch (esc) {
+          case 'n': out += '\n'; break;
+          case 't': out += '\t'; break;
+          case 'r': out += '\r'; break;
+          case '\\': out += '\\'; break;
+          case '"': out += '"'; break;
+          case "'": out += "'"; break;
+          case '/': out += '/'; break;
+          case 'b': out += '\b'; break;
+          case 'f': out += '\f'; break;
+          case 'u': {
+            const hex = text.substr(i, 4);
+            i += 4;
+            out += String.fromCharCode(parseInt(hex, 16));
+            break;
+          }
+          default: out += esc;
+        }
+        continue;
+      }
+      if (c === quote) return out;
+      out += c;
+    }
+    throw new Error('unterminated string');
+  }
+
+  function readValue() {
+    skipWsAndComments();
+    const c = peek();
+    if (c === '"' || c === "'") return readString();
+    if (c === '{') return readObject();
+    if (c === '[') return readArray();
+    if (c === 't' || c === 'f') return readBoolOrNull();
+    if (c === 'n') return readBoolOrNull();
+    if (c === '-' || (c >= '0' && c <= '9')) return readNumber();
+    throw new Error(`unexpected char '${c}' at ${i}`);
+  }
+
+  function readObject() {
+    next(); // {
+    const obj = {};
+    while (true) {
+      skipWsAndComments();
+      if (peek() === '}') { next(); return obj; }
+      // key
+      let key;
+      if (peek() === '"' || peek() === "'") key = readString();
+      else {
+        // bareword (json5 allows unquoted keys)
+        let s = '';
+        while (i < len && /[A-Za-z0-9_$-]/.test(text[i])) s += text[i++];
+        key = s;
+      }
+      skipWsAndComments();
+      if (next() !== ':') throw new Error(`expected ':' at ${i}`);
+      obj[key] = readValue();
+      skipWsAndComments();
+      const nc = next();
+      if (nc === ',') continue;
+      if (nc === '}') return obj;
+      throw new Error(`expected , or } at ${i}`);
+    }
+  }
+
+  function readArray() {
+    next(); // [
+    const arr = [];
+    while (true) {
+      skipWsAndComments();
+      if (peek() === ']') { next(); return arr; }
+      arr.push(readValue());
+      skipWsAndComments();
+      const nc = next();
+      if (nc === ',') continue;
+      if (nc === ']') return arr;
+      throw new Error(`expected , or ] at ${i}`);
+    }
+  }
+
+  function readBoolOrNull() {
+    if (text.substr(i, 4) === 'true') { i += 4; return true; }
+    if (text.substr(i, 5) === 'false') { i += 5; return false; }
+    if (text.substr(i, 4) === 'null') { i += 4; return null; }
+    throw new Error(`bad literal at ${i}`);
+  }
+
+  function readNumber() {
+    let s = '';
+    if (peek() === '-') s += next();
+    while (i < len && /[0-9.eE+-]/.test(text[i])) s += next();
+    const n = parseFloat(s);
+    if (isNaN(n)) throw new Error(`bad number '${s}'`);
+    return n;
+  }
+
+  skipWsAndComments();
+  const result = readValue();
+  skipWsAndComments();
+  if (i < len) throw new Error(`trailing chars at ${i}: ${text.substr(i, 30)}`);
+  return result;
+}
+
+module.exports = parseJson5;